fix redirects

Author: LiamConnors

.github/workflows/build.yml

@@ -40,6 +40,9 @@ jobs:
           mv _posts/r/md/ggplot2 _posts/ggplot2/md
           mv _posts/fsharp/html/csharp _posts/csharp/html
 
+      - name: Fix case-sensitive redirect issues
+        run: python fix-case-redirects.py _posts/julia/html
+
       - name: Build site
         run: |
           python front-matter-ci.py _posts

fix-case-redirects.py

@@ -0,0 +1,28 @@
+#!/usr/bin/env python3
+import frontmatter
+from pathlib import Path
+import sys
+
+for path in sys.argv[1:]:
+    for f in Path(path).glob("**/*.html"):
+        try:
+            post = frontmatter.load(f)
+        except:
+            continue
+
+        permalink = post.get('permalink', '').lower()
+        redirects = post.get('redirect_from', [])
+        if isinstance(redirects, str):
+            redirects = [redirects]
+
+        fixed = [r for r in redirects if r.lower() != permalink]
+
+        if len(fixed) < len(redirects):
+            removed = [r for r in redirects if r.lower() == permalink]
+            print(f"{f}: removed {removed}")
+            if fixed:
+                post['redirect_from'] = fixed
+            else:
+                del post['redirect_from']
+            with open(f, 'w') as out:
+                out.write(frontmatter.dumps(post))